NDCEE Hawai i Undersea Military Munitions Assessment (HUMMA) Update DoD Executive Agent Office Office of the of the Assistant Assistant Secretary of the of Army the Army (Installations and and Environment) Erika Brandenburg, NDCEE/CTC Sonia Garcia, Environet, Inc. The NDCEE is operated by: Technology Transition Supporting DoD Readiness, Sustainability, and the Warfighter
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Key Personnel U.S. Army - Mr. Tad Davis Deputy Assistant Secretary of the Army for Environment, Safety and Occupational Health (DASA (ESOH)) - Mr. J.C. King Assistant for Munitions and Chemical Matters, Office of the DASA (ESOH) - Mr. Hudson Kekaula U.S. Army Corps of Engineers, Pacific Ocean Division, Honolulu, Hawaii Prime Contractor Concurrent Technologies Corporation Ms. Erika Brandenburg Subcontractor University of Hawai i at Manoa Principle Investigator Dr. Margo Edwards Subcontractor (Technical Approach, Sampling) Environet, Inc. Senior Project Manager - Ms. Sonia Garcia 2
Introduction Between 1919 and 1970, the Armed Forces disposed of excess, obsolete, or unserviceable munitions in coastal waters off the United States, including Oahu, Hawaii. In 1970, the DoD prohibited sea disposal of munitions. In 1972, Congress passed the Marine Protection, Research, and Sanctuaries Act, Public Law 92-532, prohibiting the disposal of wastes, including munitions, in ocean waters. DoD is conducting research to identify the locations of seadisposal sites and the types of munitions sea disposed at each site and evaluating the potential impact of sea disposed munitions on human health and the environment. 3
HUMMA s Objectives Develop efficient and cost effective methodologies for characterizing munitions sea disposal sites. Characterize Site Hawaii-05 (HI-05) -- a munitions disposal site approximately 5 miles south of Pearl Harbor that was suspected to contain conventional munitions and chemical warfare material (CWM) (chemical munitions and bulk chemical agent). Conduct sampling required to determine the impact of sea disposed munitions on human health and the environment, as well as the effect of the ocean on the degradation of the munitions. 4
HUMMA Study Questions Can video tows distinguish between natural bottom features and munitions? Can Towed Video Array (TVA), Remotely Operated Vehicles (ROV), and Human Operated Vehicles (HOV) distinguish the range of integrity of the munitions at randomly selected study sites? Can munitions constituents be identified (if present) in sediment, seawater, and human food biota when using conventionally available methods of analysis? Can munitions constituents be detected at levels significantly different than those in a control site with no munitions? Are there differences in quantity or type of ecological and/or sentinel species between a munitions disposal site and a control site? Can munitions constituents pose a risk to human health at the levels found? 5
Challenges of Study The water depth of HI-05 (1,500 +/- feet) Limited bottom time Uncertainty about bio-concentration and bio-magnification of munitions constituents and degradation products Lack of knowledge about the specific types of munitions and their condition (e.g., breached, intact) Lack of biota used for human food Prevalence of transient and pelagic biota 6
Strategy Locate sea disposed munitions (considered discarded military munitions (DMM)) - Review archival research - Map the suspect disposal site conduct sonar survey - Conduct video tows to help determine dive sites - Conduct dives (submersible and ROV) to verify sonar data operations Collect and analyze water column, sediment, and biota (fish and infauna) samples at the disposal site and controlled areas Evaluate risk Conduct community relations and educational outreach 7
26.6 mile 2 Study Area, located 5 miles (+/-) south of Pearl Harbor, with a depth of 900 1600 feet Study Area (HI-05) 4 = Distance in miles from the mouth of Pearl Harbor = 26.6 mile 2 HUMMA Project Study area = Areas investigated during the USACE dredge material surveys conducted in 1976 The darkest material in the image is the submerged reef and the dredge material is the intermediate grey as indicated. Source: UH, 2007 8
Sampling Sites Number: 19 sites (984 ft diameter) within the Study Area Samples taken at: - Breached and intact DMM (including suspect CWM) - Breached and intact DMM in dredge material disposal areas - Dredge material disposal areas - Control sites (neither DMM nor dredge materials present) Simplified Study Area Schematic 9
Sampling and Analysis Plan Field Sampling Plan - Acquisition of remotely sensed (non-contact) data - Field activities - Field documentation - Sample packaging and handling - Disposal of investigation derived waste Quality Assurance Project Plan - Data generation and acquisition - Assessment and oversight - Data validation and usability Health and Safety Plan - Medical surveillance and training - Site hazard characterization and activity hazard analysis - Personnel decontamination requirements - Accident prevention and emergency response 10
Chemical Constituents Chemical Agents / Degradation Products Energetics/Degradation Products Mustard 1,4 dithiane 1,4-thioxane Thiodiglycol (TDG) Dichloro(2-chlorovinyl)arsine (Lewisite) 2-chlorovinyl arsenous acid (CVAA) 2-chlorovinyl arsenous oxide (CVAO) 2,4,6 trinitrotoluene (TNT) Methyl-2,4,6-trinitrophenylnitramine (Tetryl) 4-amino -2,6-dinitrotoluene (4-Am-DNT) 2-amino -4,6-dinitrotoluene (2-Am-DNT) Hexahydro-1,3,5 -trinitro-1,3,5-triazine (RDX) Metals Arsenic (total) Copper Lead 11
Task Progress August, 2007 Conducted SONAR survey of HI-05 - Purpose Map the study area with 200% overlapping coverage to look for small-scale reflective features - Results Tens of thousands of small reflective features were located, including long linear trails and fields that potentially contained DMMs December 2008 March 2009 (video tows started 12/2008) - Conducted video tows - Conducted dives (submersible and ROV) based on evaluation of SONAR data and selection of potential targets - Collected water and sediment samples in the vicinity of the selected munitions, dredge, and at control sites April 2009 - June 2010 Biota sampling and chemical analysis to assess potential impact on human health and the environment, preparation of final report. 12
Conceptual Model l eaking from Munitions Spills at time of Disposal 13
Conceptual Site Model Seafloor Sediment Uptake by Biota Recovery of Contaminated Water Mixture with Shallow Waters 14
Conceptual Site Model Seafood Consumption Volatilization Volatilization Inhalation In estion Dermal Contact In estion Inhalation In estion Dermal Contact Inhalation In estion Dermal Contact 15
Conceptual Site Model 16
Public Involvement Plan Because HUMMA was a high profile effort, a communication plan was created to lay out the components of the public involvement program and to identify how the public would be engaged. Public Involvement Plan included: - Naming primary spokespersons - Creating communication guidelines - Establishing the outreach efforts (formal and informal briefings, website (www.hummaproject.com), press releases, and printed materials) - Identifying the primary audiences Elected Officials State Agencies Community Groups Army Liaisons in Hawaii Key Individuals Media 17
Lessons Learned from Diving Operations Successes Many of the lines and fields of speckles observed in the backscatter data correspond to trails of DMM on the seafloor. The ROV is a useful nighttime tool for evaluating debris trails for potential munitions prior to landing on them. Currents were too strong for the ROVs to travel along the straight line of the speckled paths. Therefore, the operators found it more efficient to slalom crossing the speckled path on occasion to locate features. Submersibles can acquire samples close to targets. Sediment scoops and water samples deployed by the submersibles were effective in collecting intact, discrete samples. On-board contingent can screen samples for chemical agents before taking custody to protect human health. Submersibles can return to the same DMM after several days (dives). 18
Lessons Learned from Diving Operations Difficulties Encountered Stratigraphic preservation of infauna samples collected during the submersible dives was poor because the muddy/sandy substrate was very fluid. Sample weight and corresponding basket space are a limiting factor for the submersibles. Sample sites were to be selected based on the condition of the DMM objects, both intact and breached. Without touching the ordnance, it was difficult to determine if it was breached. Therefore sample areas were changed to DMM objects in clean areas and DMM objects in dredge spoil disposal areas. To avoid reducing the time allotted for submersible dives, a commercial fisherman collected the macrobiota samples after the primary field program. 19
16 submersible dives 6 tows of the ROV Map of Diving Operations Figure Description Submersible (circled points) ROV (line) Large black circles indicate disposal sites Area 3 (north) and Area 3A (south) where U.S. Army archival research suggested DMM might be located Thick pink lines indicate the southeastern extent of the Defensive Sea Area 20
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Points of Contact DoD Executive Agent Office of the Assistant Secretary of the Army (Installations and Environment) Ms. Erika Brandenburg Concurrent Technologies Corporation 904-486-4008 BrandenE@ctc.com For more information: www.hummaproject.com www.ndcee.ctc.com This work was funded through the Office of the Assistant Secretary of the Army (Installations and Environment) and conducted under contract W74V8H-04-D-0005 Task 0496. The views, opinions, and/or findings contained in this paper are those of the author(s) and should not be construed as an official Department of the Army position, policy, or decision unless so designated by other official documentation. 22